<?php  
namespace xto\core;

class smtp  
{  
    /* Public Variables */  
    public $smtp_port;  
    public $time_out;  
    public $host_name;  
    public $log_file;  
    public $relay_host;  
    public $debug;  
    public $auth;  
    public $user;  
    public $pass;  
  
    /* Private Variables */  
    private $sock;  
  
    /* Constractor */  
    function smtp($relay_host = "", $smtp_port = 25, $auth = false, $user, $pass)  
    {  
        $this->debug = FALSE;  
        $this->smtp_port = $smtp_port;  
        $this->relay_host = $relay_host;  
        $this->time_out = 30; //is used in fsockopen()   
        #   
        $this->auth = $auth;//auth   
        $this->user = $user;  
        $this->pass = $pass;  
        #   
        $this->host_name = "localhost"; //is used in HELO command   
        $this->log_file = "";  
  
        $this->sock = FALSE;  
    }  
  
    /* Main Function */  
    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")  
    {  
        $mail_from = $this->get_address($this->strip_comment($from));  
        $body = preg_replace("/(^|(\r\n))(\\.)/", "\\1.\\3", $body);  
        $header = "MIME-Version:1.0\r\n";  
        if ($mailtype == "HTML") {  
            $header .= "Content-Type:text/html\r\n";  
        }  
        $header .= "To: " . $to . "\r\n";  
        if ($cc != "") {  
            $header .= "Cc: " . $cc . "\r\n";  
        }  
        $header .= "From: $from<" . $from . ">\r\n";  
        $header .= "Subject: " . $subject . "\r\n";  
        $header .= $additional_headers;  
        $header .= "Date: " . date("r") . "\r\n";  
        $header .= "X-Mailer:By Redhat (PHP/" . phpversion() . ")\r\n";  
        list($msec, $sec) = explode(" ", microtime());  
        $header .= "Message-ID: <" . date("YmdHis", $sec) . "." . ($msec * 1000000) . "." . $mail_from . ">\r\n";  
        $TO = explode(",", $this->strip_comment($to));  
  
        if ($cc != "") {  
            $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));  
        }  
  
        if ($bcc != "") {  
            $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));  
        }  
  
        $sent = TRUE;  
        foreach ($TO as $rcpt_to) {  
            $rcpt_to = $this->get_address($rcpt_to);  
            if (!$this->smtp_sockopen($rcpt_to)) {  
                $this->log_write("Error: Cannot send email to " . $rcpt_to . "\n");  
                $sent = FALSE;  
                continue;  
            }  
            if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {  
                $this->log_write("E-mail has been sent to <" . $rcpt_to . ">\n");  
            } else {  
                $this->log_write("Error: Cannot send email to <" . $rcpt_to . ">\n");  
                $sent = FALSE;  
            }  
            fclose($this->sock);  
            $this->log_write("Disconnected from remote host\n");  
        }  
        echo "<br>";  
        echo $header;  
        return $sent;  
    }  
  
    /* Private Functions */  
  
    function smtp_send($helo, $from, $to, $header, $body = "")  
    {  
        if (!$this->smtp_putcmd("HELO", $helo)) {  
            return $this->smtp_error("sending HELO command");  
        }  
        #auth   
        if ($this->auth) {  
            if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {  
                return $this->smtp_error("sending HELO command");  
            }  
            if (!$this->smtp_putcmd("", base64_encode($this->pass))) {  
                return $this->smtp_error("sending HELO command");  
            }  
        }  
        #   
        if (!$this->smtp_putcmd("MAIL", "FROM:<" . $from . ">")) {  
            return $this->smtp_error("sending MAIL FROM command");  
        }  
  
        if (!$this->smtp_putcmd("RCPT", "TO:<" . $to . ">")) {  
            return $this->smtp_error("sending RCPT TO command");  
        }  
  
        if (!$this->smtp_putcmd("DATA")) {  
            return $this->smtp_error("sending DATA command");  
        }  
  
        if (!$this->smtp_message($header, $body)) {  
            return $this->smtp_error("sending message");  
        }  
  
        if (!$this->smtp_eom()) {  
            return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");  
        }  
  
        if (!$this->smtp_putcmd("QUIT")) {  
            return $this->smtp_error("sending QUIT command");  
        }  
  
        return TRUE;  
    }  
  
    function smtp_sockopen($address)  
    {  
        if ($this->relay_host == "") {  
            return $this->smtp_sockopen_mx($address);  
        } else {  
            return $this->smtp_sockopen_relay();  
        }  
    }  
  
    function smtp_sockopen_relay()  
    {  
        $this->log_write("Trying to " . $this->relay_host . ":" . $this->smtp_port . "\n");  
        $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);  
        if (!($this->sock && $this->smtp_ok())) {  
            $this->log_write("Error: Cannot connenct to relay host " . $this->relay_host . "\n");  
            $this->log_write("Error: " . $errstr . " (" . $errno . ")\n");  
            return FALSE;  
        }  
        $this->log_write("Connected to relay host " . $this->relay_host . "\n");  
        return TRUE;  
    }  
  
    function smtp_sockopen_mx($address)  
    {  
        $domain = preg_replace("/^.+@([^@]+)$/", "\\1", $address);  
        if (!@getmxrr($domain, $MXHOSTS)) {  
            $this->log_write("Error: Cannot resolve MX \"" . $domain . "\"\n");  
            return FALSE;  
        }  
        foreach ($MXHOSTS as $host) {  
            $this->log_write("Trying to " . $host . ":" . $this->smtp_port . "\n");  
            $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);  
            if (!($this->sock && $this->smtp_ok())) {  
                $this->log_write("Warning: Cannot connect to mx host " . $host . "\n");  
                $this->log_write("Error: " . $errstr . " (" . $errno . ")\n");  
                continue;  
            }  
            $this->log_write("Connected to mx host " . $host . "\n");  
            return TRUE;  
        }  
        $this->log_write("Error: Cannot connect to any mx hosts (" . implode(", ", $MXHOSTS) . ")\n");  
        return FALSE;  
    }  
  
    function smtp_message($header, $body)  
    {  
        fputs($this->sock, $header . "\r\n" . $body);  
        $this->smtp_debug("> " . str_replace("\r\n", "\n" . "> ", $header . "\n> " . $body . "\n> "));  
  
        return TRUE;  
    }  
  
    function smtp_eom()  
    {  
        fputs($this->sock, "\r\n.\r\n");  
        $this->smtp_debug(". [EOM]\n");  
  
        return $this->smtp_ok();  
    }  
  
    function smtp_ok()  
    {  
        $response = str_replace("\r\n", "", fgets($this->sock, 512));  
        $this->smtp_debug($response . "\n");  
  
        if (!preg_match("/^[23]/", $response)) {  
            fputs($this->sock, "QUIT\r\n");  
            fgets($this->sock, 512);  
            $this->log_write("Error: Remote host returned \"" . $response . "\"\n");  
            return FALSE;  
        }  
        return TRUE;  
    }  
  
    function smtp_putcmd($cmd, $arg = "")  
    {  
        if ($arg != "") {  
            if ($cmd == "") $cmd = $arg;  
            else $cmd = $cmd . " " . $arg;  
        }  
  
        fputs($this->sock, $cmd . "\r\n");  
        $this->smtp_debug("> " . $cmd . "\n");  
  
        return $this->smtp_ok();  
    }  
  
    function smtp_error($string)  
    {  
        $this->log_write("Error: Error occurred while " . $string . ".\n");  
        return FALSE;  
    }  
  
    function log_write($message)  
    {  
        $this->smtp_debug($message);  
  
        if ($this->log_file == "") {  
            return TRUE;  
        }  
  
        $message = date("M d H:i:s ") . get_current_user() . "[" . getmypid() . "]: " . $message;  
        if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {  
            $this->smtp_debug("Warning: Cannot open log file \"" . $this->log_file . "\"\n");  
            return FALSE;  
        }  
        flock($fp, LOCK_EX);  
        fputs($fp, $message);  
        fclose($fp);  
  
        return TRUE;  
    }  
  
    function strip_comment($address)  
    {  
        $comment = "/\\([^()]*\\)/";  
        while (preg_match($comment, $address)) {  
            $address = preg_replace($comment, "", $address);  
        }  
  
        return $address;  
    }  
  
    function get_address($address)  
    {  
        $address = preg_replace("/([ \t\r\n])+/", "", $address);  
        $address = preg_replace("/^.*<(.+)>.*$/", "\\1", $address);  
  
        return $address;  
    }  
  
    function smtp_debug($message)  
    {  
        if ($this->debug) {  
            echo $message . "<br>";  
        }  
    }  
  
    function get_attach_type($image_tag)  
    { //  
  
        $filedata = array();  
  
        $img_file_con = fopen($image_tag, "r");  
        unset($image_data);  
        while ($tem_buffer = AddSlashes(fread($img_file_con, filesize($image_tag))))  
            $image_data = $tem_buffer;  
        fclose($img_file_con);  
  
        $filedata['context'] = $image_data;  
        $filedata['filename'] = basename($image_tag);  
        $extension = substr($image_tag, strrpos($image_tag, "."), strlen($image_tag) - strrpos($image_tag, "."));  
        switch ($extension) {  
            case ".gif":  
                $filedata['type'] = "image/gif";  
                break;  
            case ".gz":  
                $filedata['type'] = "application/x-gzip";  
                break;  
            case ".htm":  
                $filedata['type'] = "text/html";  
                break;  
            case ".html":  
                $filedata['type'] = "text/html";  
                break;  
            case ".jpg":  
                $filedata['type'] = "image/jpeg";  
                break;  
            case ".tar":  
                $filedata['type'] = "application/x-tar";  
                break;  
            case ".txt":  
                $filedata['type'] = "text/plain";  
                break;  
            case ".zip":  
                $filedata['type'] = "application/zip";  
                break;  
            default:  
                $filedata['type'] = "application/octet-stream";  
                break;  
        }  
        return $filedata;  
    }  
  
} // end class   
?>